Synchronizing device



June 29 1926. 1,590,694

W. W. M LARLN SYNCHRONI ZING DEVICE Filed Feb. 10. 1922 fifm'fiarerggmng I Patented June 29, 1926. i v

UNITED STATES PATENT OFFICE.

WILLIAM W. MGLAREN, OF BIRMINGHAM, ALABAMA.

SYNCHRONIZING DEVICE.

Application filed February 10, 1922. Serial No. 535,640.

' This invention aims to provide a novel making of a motion picture, the tape 4 is means for producing synchronism between advanced simultaneously with the movement a talking machine and a motion picture maof the film. The proper dialogue to accomchine. pany the picture is spoken into the trans- 5 It is Within the province of the disclosure mitter 2, the plate 4 being magnetized, from. to improve generally and to enhance the the magnet 7, to correspond with the action utility of devices of that type to which the taking place in the magnet responsive to the invention appertains. Words spoken in the transmitter 2.

WVith the above and other objects in view, The device claimed may be used in con- 6 10 which will appear as the description pronection with a receiver, as well as in conceeds, the invention resides inthe combinection with a transmitter, the substitution nation and arrangement of parts and in the of a receiver for the transmitter 2 being andetails of construction hereinafter described obvious change lying well within the. skill and claimed, it being understood that, within of a person versed in the art. 55 the scope of what is claimed, changes in Having thus described the invention, what the precise embodiment of the invention is claimed is: shown can be made without departing from In a device for producing synchronism bethe spirit of the invention. tween projection and dialogue, spaced shafts In the accompanying drawings each of which is rotatable, first and second 50 Figure 1 shows in elevation, and diagramdrums fixed to each shaft for simultaneous matically one means whereby the tape which rotation therewith, a film engaged at'its ends operates the sound reproducing mechanism with the first drums, and a metallic ribbon may be magnetized; F lgure 2 is an elevation engaged at its ends with the second drums, showing the drums or reels on which the the ribbon being diil'erently magnetized 5 motion picture film and the tape which is throughout its length, the first and second magnetized may be carried. drums beingspaced apart transversely on Referring to Figure 1, the numeral 1 deeach shaft, and each drum being provided notes a circuit wherein is located a trans on both edges with flanges which engage mitter 2, a source of electrical energy? and both edges of the film and of the ribbon a magnet 7. A metal tape 4 made of any respectively, the construction being such as desired material, is mounted to move close to preventthe edges .01"; the ribbon and of the to and within the field of the magnet 7, the film, positively, from overlapping, thereby tape, if desired, being carried by drums or to render the ribbon and the film, each, reels 5, the tape moving along a support or freely removable, during projection, indebacking 6. The film is shown at 8. Any pendently of the other, and to render the desired means may be rovided for advanc adjacent inner edges of the film and the ing the tape 4 with the film 8. Thus, as indiribbon accessible.

eated in Figure 2, the film 8 may be carried In testimony that I claim the foregoing by reels 9, one of the drums 5 and one of as my own, I have hereto afiixed my signa- 30 the reels 9 being secured to a shaft 10. ture.

Whenthe film 8 is advanced, during the WILLIAM W. MOLAREN. 

